Pretreating metal with Nanoceramic technology – A significant step forward

pretreating with nanoceramic

Nanoceramic technology is more increasingly widespread in the industry, and specifically metal surface treatment. It brings so many benefits than the traditional method is phosphating. However, It is not really common in Vietnam, especially for simple metal products like fences, gates, or kennels. Ninh Binh DHA is one of the few manufacturers that applied this technology to metal pretreatment. To learn more about its great benefit, please continue reading.

Nanoceramic is better corrosion protection than phosphating

The nanoceramic technology offers significant performance improvements. When we make a comparison between a zinc phosphate with a thickness of 50 – 100 nm typically and a nanoceramic coating with a thickness of only 20 – 30 nm (nanometers), the result shows that the nanoceramic coating has substantially better corrosion protection and paint adhesion.

Comparative measurements verified these features on steel and aluminium samples treated with zinc phosphating or the nanoceramic coating and subsequently coated with polyester powder. The corrosion protection was tested with a salt spray test to ISO 9227 standards, and the paint adhesion was evaluated using a cross-hatch test to ISO 2409 standards. The nanotechnology-based conversion coating showed minimal rust creep on all samples and achieved better results in the salt spray test. On the steel sample, corrosion creep was reduced up to one-ninth of the creep with zinc phosphating (1.5 mm compared to 14.0 mm)

Better Eco-Performance

Why do we tell you that the nanoceramic technology has better eco-performance when compared to zinc phosphating technology in tradition?

Global warming is a matter of concern. Therefore, environmentally friendly technologies are vital and are becoming a propensity for development.

So far, the zinc phosphate process has proven to offer quite good performance, but its effluent liquid has a high phosphorous content. Therefore we need to maintain the storage tank to remove the phosphorous dregs, and the process effluent needs to be treated prior to release. Extreme levels of phosphate in the natural environment can threaten the development of plants and aquatic species.

While, the nanoceramic technology is based on oxides of metals such as titanium or zirconium, and it does not use regulated heavy metals such as nickel, chromium, manganese or lead. So there are no heavy metals or phosphates to discharge. The new process represents a major step forward in terms of ecological sustainability. This is a significant step forward in terms of environmental sustainability.

pretreatment steel fences with nanoceramic

Reduce costs for powder coating process to have a better price

The nanoceramic pretreatment process not only met all performance criteria, including 1500-hour salt spray tests, but it also offered many processing advantages that resulted in significant cost savings. Maintenance requirements such as nozzle cleaning and chemical cleanouts also were significantly reduced since the phosphate-free conversion coating virtually eliminated sludge buildup in the tank. Additionally, the ambient temperature process allowed the plant to turn off the burners in its conversion coating stages, reducing the plant’s energy consumption.

Thanks to the application of nanoceramic technology instead of phosphating, we have saved a lot of costs to give you better prices.

pretreatment steel fences with nanoceramic

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